Terushichi Hirai (平井 輝七, Hirai Terushichi, 5 December 1900 – 11 December 1970) was one of the most prominent Japanese photographers in the first half of the 20th century in Japan. As an amateur photographer, he was very energetic in photography groups, such as Naniwa Photography Club (浪華写真倶楽部, Naniwa Shashin Kurabu) and Tampei Photography Club. In 1937, he founded Avant-Garde Image Group (Avant-Garde Zoei Shūdan, アヴァンギャルド造影集団) with (1894–1957, 花和銀吾), Yoshio Tarui and Kōrō Honjō.